JDK-8033923 : Use BufferingOopClosure for G1 code root scanning
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 9
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2014-02-07
  • Updated: 2015-01-21
  • Resolved: 2014-02-11
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JDK 8 JDK 9
8u40Fixed 9 b04Fixed
Description
G1 uses BufferingOopClosures to measure the time for object copying, excluding the root scanning part. BufferingOopClosures couldn't handle the unaligned oop*s in the code roots. Since JDK-8033764 fixes that, we should use the BufferingOopClosure for code roots as well.